[D8220P], Letter from Henry Draper to Thomas Alva Edison, May 22nd, 1882
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Title
[D8220P], Letter from Henry Draper to Thomas Alva Edison, May 22nd, 1882
Editor's Notes
Made some more trials with his dynamo and finds that at 2200 rpm it gives 9 candles per lamp. Also has developed a device for preventing cutting of the commutator and for reducing sparking. Denver and Rio Grande RR may be interested in his locomotive, as they have access to water power at points on their line. Just received letter from Barker who says that the Faure battery smooths out the pulsations of his gas engine.
Author
Recipient
Date
1882-05-22
Type
Subject
Folder/Volume ID
D8220-F
Microfilm ID
60:771
Document ID
D8220P
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University